Statements of Equity and Accumulated Deficit - USD ($)	Total	Series A Preferred Stock [Member]	Series M Preferred Stock [Member]	Series A1 Preferred Stock [Domain]	Common Stock [Member]	Common Stock [Member] Series A Preferred Stock [Member]	Common Stock [Member] Series M Preferred Stock [Member]	Common Stock [Member] Series A1 Preferred Stock [Domain]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Series A Preferred Stock [Member]	Additional Paid-in Capital [Member] Series M Preferred Stock [Member]	Additional Paid-in Capital [Member] Series A1 Preferred Stock [Domain]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Series A Preferred Stock [Member]	Accumulated Deficit [Member] Series M Preferred Stock [Member]	Accumulated Deficit [Member] Series A1 Preferred Stock [Domain]	Total Stockholders' Equity [Member]	Total Stockholders' Equity [Member] Series A Preferred Stock [Member]	Total Stockholders' Equity [Member] Series M Preferred Stock [Member]	Total Stockholders' Equity [Member] Series A1 Preferred Stock [Domain]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Series A Preferred Stock [Member]	Noncontrolling Interest [Member] Series M Preferred Stock [Member]	Noncontrolling Interest [Member] Series A1 Preferred Stock [Domain]	Preferred Stock [Member]	Preferred Stock [Member] Series A Preferred Stock [Member]	Preferred Stock [Member] Series M Preferred Stock [Member]	Preferred Stock [Member] Series A1 Preferred Stock [Domain]	ClassBUnits [Member]	ClassBUnits [Member] Common Stock [Member]	ClassBUnits [Member] Additional Paid-in Capital [Member]	ClassBUnits [Member] Accumulated Deficit [Member]	ClassBUnits [Member] Total Stockholders' Equity [Member]	ClassBUnits [Member] Noncontrolling Interest [Member]	ClassBUnits [Member] Preferred Stock [Member] Series A Preferred Stock [Member]
Proceeds from Issuance of Preferred Stock and Preference Stock		$ 339,316,000				$ 0				$ 339,313,000				$ 0				$ 339,316,000								$ 3,000
Balance at Dec. 31, 2016	$ 885,261,000				$ 265,000				$ 906,738,000				$ (23,232,000)				$ 883,780,000				$ 1,481,000					9,000
Stock Redeemed or Called During Period, Value	(4,500,000)				7,000				(4,507,000)				0				(4,500,000)				0					0
exercise of warrants	84,452,000				62,000				84,390,000				0				84,452,000				0					0
Stock Issued During Period, Value, Conversion of Units	0				2,000				1,751,000				0				1,753,000				(1,753,000)					0
amortization of Class A Unit awards																													$ 3,003,000	$ 0	$ 0	$ 0	$ 0	$ 3,003,000	$ 0
Syndication and offering costs	37,507,000				0				37,507,000				0				37,507,000				0					0
Stock Issued During Period, Value, Share-based Compensation, Gross	467,000				0				467,000				0				467,000				0					0
Dividends, Common Stock, Cash	(31,244,000)				0				(31,244,000)				0				(31,244,000)				0				$ 0
Balance at Dec. 31, 2017	1,280,766,000				386,000				1,271,040,000				4,449,000				1,275,887,000				4,879,000					12,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	28,667,000				0				0				27,681,000				27,681,000				986,000					0
Contribution from non-controlling interests	540,000				0				0				0				0				540,000					0
non-controlling interest equity adjustment	0				0				(1,465,000)				0				(1,465,000)				1,465,000					0
Payments to Noncontrolling Interests	(843,000)																				(843,000)
Dividends, Preferred Stock	(475,000)	(63,176,000)				0			(475,000)	(63,176,000)			0	0			(475,000)	(63,176,000)			0	$ 0				0	$ 0
Stock Issued During Period, Value, New Issues	76,805,000				50,000				76,755,000				0				76,805,000				0					0
Proceeds from Issuance of Preferred Stock and Preference Stock	28,951,000	420,393,000				0	$ 0		28,951,000	420,389,000			0	0			28,951,000	420,393,000								4,000	0
Stock Redeemed or Called During Period, Value	(9,428,000)				17,000				(9,445,000)				0				(9,428,000)				0					0
exercise of warrants	16,054,000				12,000				16,042,000				0				16,054,000				0					0
Stock Issued During Period, Value, Conversion of Units	0				3,000				2,011,000				0				2,014,000				(2,014,000)					0
amortization of Class A Unit awards																													1,166,000	0	0	0	0	1,166,000	0
Syndication and offering costs	(44,681,000)				0				(44,681,000)				0				(44,681,000)				0					0
Stock Issued During Period, Value, Share-based Compensation, Gross	537,000				0				537,000				0				537,000				0					0
Dividends, Common Stock, Cash	(41,129,000)				0				(41,129,000)				0				(41,129,000)				0				0
Balance at Dec. 31, 2018	1,609,385,000				418,000				1,607,712,000				0				1,608,146,000				1,239,000					16,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	44,538,000				0				0				43,467,000				43,467,000				1,071,000					0
Contribution from non-controlling interests	0
non-controlling interest equity adjustment	0				0				2,822,000				0				2,822,000				(2,822,000)					0
Payments to Noncontrolling Interests	(1,041,000)				0				0				0				0				(1,041,000)					0
Dividends, Preferred Stock	(1,899,000)	(84,842,000)				0			(850,000)	(37,975,000)			(1,049,000)	(46,867,000)			(1,899,000)	(84,842,000)			0	0				0	0
Proceeds from Issuance of Preferred Stock and Preference Stock		482,149,000	$ 61,758,000	$ 4,731,000		0	0	$ 0		482,144,000	$ 61,757,000	$ 4,731,000			$ 0	$ 0		482,149,000	$ 61,758,000	$ 4,731,000			$ 0	$ 0		5,000	1,000	$ 0
Stock Redeemed or Called During Period, Value	(12,105,000)				36,000				(12,140,000)				0				(12,105,000)				0					(1,000)
exercise of warrants	11,495,000				9,000				11,486,000				0				11,495,000				0					0
Stock Issued During Period, Value, Conversion of Units	0				1,000				676,000				0				677,000				(677,000)					0
amortization of Class A Unit awards																													$ 591,000	$ 0	$ 0	$ 0	$ 0	$ 591,000	$ 0
Syndication and offering costs	(60,165,000)				0				(60,165,000)				0				(60,165,000)				0					0
Stock Issued During Period, Value, Share-based Compensation, Gross	632,000				0				632,000				0				632,000				0					0
Dividends, Common Stock, Cash	(46,755,000)				0				(46,755,000)				0				(46,755,000)				0				$ 0
Balance at Dec. 31, 2019	1,934,116,000				464,000				1,938,057,000				(7,244,000)				1,931,298,000				2,818,000					21,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(7,458,000)				0				0				(7,244,000)				(7,244,000)				(214,000)					0
Contribution from non-controlling interests	4,539,000
Contribution from non-controlling interests	4,538,000				0				0				0				0				4,538,000					0
non-controlling interest equity adjustment	0				0				1,751,000				0				1,751,000				(1,751,000)					0
Payments to Noncontrolling Interests	(908,000)				$ 0				0				0				0				(908,000)					0
Dividends, Preferred Stock	$ (4,807,000)	$ (108,950,000)		$ (15,000)		$ 0	$ 0	$ 0	$ (4,807,000)	$ (108,950,000)		$ (15,000)	$ 0	$ 0		$ 0	$ (4,807,000)	$ (108,950,000)		$ (15,000)	$ 0	$ 0		$ 0		$ 0	$ 0	$ 0